Tak-Yin Chau, O.D.
NPI 1346392990 · Optometrist · Westford, MA
Enrolled with Medicare as Order and Referring Only - Optometry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Tak-Yin Chau, O.D. is a Optometrist provider in Westford, MA (NPI 1346392990).
Provider details
- NPI number
- 1346392990
- Entity type
- Individual
- Primary specialty
- OptometristEye and Vision Services Providers
- Credential
- O.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 5676 (OH)
Specialties & taxonomies
Eye and Vision Services Providers
Eye and Vision Services Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-01-16
- Last updated
- 2019-12-16
- Certified
- 2019-12-16
Frequently asked questions
- What is Tak-Yin Chau's NPI number?
- Tak-Yin Chau's National Provider Identifier (NPI) is 1346392990, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tak-Yin Chau's specialty?
- Tak-Yin Chau is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
- Where is Tak-Yin Chau located?
- Tak-Yin Chau's practice location on file with NPPES is 133 Littleton Rd, Westford, MA 01886-3198.
- What is Tak-Yin Chau's phone number?
- The practice phone number listed in the NPPES registry for Tak-Yin Chau is (978) 589-9919.
- Does Tak-Yin Chau accept Medicare?
- Tak-Yin Chau is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Tak-Yin Chau's NPI active?
- Yes — Tak-Yin Chau's NPI (1346392990) is active in the NPPES registry as of the last update on 2019-12-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.